400617377 has 2 divisors, whose sum is σ = 400617378. Its totient is φ = 400617376.

The previous prime is 400617361. The next prime is 400617457. The reversal of 400617377 is 773716004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 385376161 + 15241216 = 19631^2 + 3904^2 .

It is a cyclic number.

It is not a de Polignac number, because 400617377 - 2⁴ = 400617361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (400617277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200308688 + 200308689.

It is an arithmetic number, because the mean of its divisors is an integer number (200308689).

Almost surely, 2^400617377 is an apocalyptic number.

It is an amenable number.

400617377 is a deficient number, since it is larger than the sum of its proper divisors (1).

400617377 is an equidigital number, since it uses as much as digits as its factorization.

400617377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 35.

The square root of 400617377 is about 20015.4284740547. The cubic root of 400617377 is about 737.1851775886.

The spelling of 400617377 in words is "four hundred million, six hundred seventeen thousand, three hundred seventy-seven".